"See" the Sounds of Classic Mac Audio 🔊🍏
We're working on the Pico-Mac port https://github.com/jepler/pico-mac/tree/rp2350-fruitjam to Fruit Jam https://www.adafruit.com/product/6200 and one thing we really want to add is sound support for classic Mac games and HyperCard stacks.
Coming soon! Sign up to be notified when these are in stockWe were catching up on a recent hackaday hackchat with eben upton and learne
Audio on the hardware we're emulating is pretty straightforward: every scanline of the video generator also outputs one byte of PWM (Pulse Width Modulation) data. We have 370 horizontal lines—352 visible and 18 during the vsync—at a 60.15 Hz refresh rate, producing approximately 22.255 kHz audio. That data is written to memory address $1FD00 http://www.mac.linux-m68k.org/devel/plushw.php so all we have to do now is pipe that 8-bit PWM signal either out to a timer on the RP2350 microcontroller or To the TLV320DAC3100 I²S amplifier onboard Fruit Jam, for that sweet, sweet 'Wild Eep' https://www.facebook.com/adafruitindustries/videos/1873371666122621